trying to do crammers rule what im doing wrong

int number

int a;

int b;

int c;

int d;

int e;

int f;//values of intergers

double x1 ;//value of x

double z ;// value of x1/x2

double y1 ;//value of y

cout << "Please enter integers values for a " << endl;

cin >> number;

cout << "Please enter integers values for b " << endl;

cin >> number;

cout << "Please enter integers values for c " << endl;

cin >> number;

cout << "Please enter integers values for d " << endl;

cin >> number;

cout << "Please enter integers values for e " << endl;

cin >> number;

cout << "Please enter integers values for f " << endl;

cin >> number;

x1 =e*c-f*b ;

z=a*e-b*d ;

y1=a*f-d*c;

cout << "x = " << z/x1 << endl;

cout << "y = " << z/ y1 << endl;

im trying to put this equations

x = (c e - f b) / D and y = (a f - d c) / D

and x = a e - b d.

its the crammer rule but i cannot figure out how to put it on a c++ program any help is not coming up right this is what i got

x1 =e*c-f*b ;

z=a*e-b*d ;

y1=a*f-d*c;